EP 1160353 A1 20011205 - Coated cemented carbide cutting tool member and process for producing the same

Title (en)

Coated cemented carbide cutting tool member and process for producing the same

Title (de)

Beschichtetes Schneidwerkzeug aus zementiertem Karbid und Verfahren zu dessen Herstellung

Title (fr)

Outil de coupe en carbure fritté muni d'un revêtement et son procédé de fabrication

Publication

EP 1160353 A1 20011205 (EN)

Application

EP 00111028 A 20000531

Priority

EP 00111028 A 20000531
US 58377300 A 20000531

Abstract (en)

A coated cemented carbide cutting tool member and a process for production thereof are disclosed. The coated cemented carbide cutting tool comprises a substrate and a hard coating layer deposited on said substrate by chemical vapor deposition and/or physical vapor deposition, wherein said hard coating layer has average thickness of 3 to 25 mu m, and comprises (1) at least one Ti compounds layer that is composed of at least one granular layer of TiC, TiN, TiCN, Ti2O3, TiCO, TiNO and TiCNO, whose average thickness is 0.1 to 5 mu m, (2) TiCN layer having longitudinal growth crystal structure whose average thickness is 2 to 15 mu m, and (3) Al2O3 layer whose average thickness is 0.5 to 8 mu m, wherein, said longitudinal TiCN layer has compositional gradient of carbon and nitrogen along with its growth direction.

IPC 1-7

C23C 16/36; C23C 30/00; C23C 16/02

IPC 8 full level

C23C 16/02 (2006.01); C23C 16/36 (2006.01); C23C 30/00 (2006.01)

CPC (source: EP US)

C23C 16/029 (2013.01 - EP US); C23C 16/36 (2013.01 - EP US); C23C 30/005 (2013.01 - EP US); Y10T 407/27 (2015.01 - EP US); Y10T 428/24942 (2015.01 - EP US); Y10T 428/24975 (2015.01 - EP US); Y10T 428/265 (2015.01 - EP US)

Citation (search report)

[YDA] US 5920760 A 19990706 - YOSHIMURA HIRONORI [JP], et al
[YA] EP 0643152 A2 19950315 - PLANSEE TIZIT GMBH [AT]
[A] US 5681651 A 19971028 - YOSHIMURA HIRONORI [JP], et al
[A] PATENT ABSTRACTS OF JAPAN vol. 1996, no. 05 31 May 1996 (1996-05-31)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1160353 A1 20011205; EP 1160353 B1 20071212; AT E380890 T1 20071215; US 6338894 B1 20020115

DOCDB simple family (application)

EP 00111028 A 20000531; AT 00111028 T 20000531; US 58377300 A 20000531